Visual FoxPro

Add a Related Item from a BinData Object

Demonstrates the Chilkat Email.AddRelatedBd method, which adds a related item (such as an inline image) using the contents of a BinData object, and returns the generated Content-ID. This example loads an image into a BinData, adds it, captures the Content-ID, and references it from the HTML body.

Background: This is the binary, Content-ID-based way to embed an inline resource — the right choice for images, whose bytes belong in a BinData rather than a string. Because Chilkat generates the Content-ID, the usual pattern is: add the item first, capture the returned ID, then build the matching <img src="cid:..."> reference from it (done here with a StringBuilder).

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LOCAL lnSuccess
LOCAL loEmail
LOCAL loBdImage
LOCAL lcCid
LOCAL loSbHtml
LOCAL lnNumReplaced

lnSuccess = 0

*  Demonstrates the AddRelatedBd method, which adds a related item (such as an inline image)
*  using the contents of a BinData object, and returns the generated Content-ID.

loEmail = CreateObject('Chilkat.Email')
loEmail.Subject = "Related image from BinData"

*  Load the image data from a file into a BinData object.
loBdImage = CreateObject('Chilkat.BinData')
lnSuccess = loBdImage.LoadFile("qa_data/images/logo.png")
IF (lnSuccess = 0) THEN
    ? loBdImage.LastErrorText
    RELEASE loEmail
    RELEASE loBdImage
    CANCEL
ENDIF

*  Add the image as a related item; capture its generated Content-ID.
lcCid = loEmail.AddRelatedBd("logo.png",loBdImage)
IF (loEmail.LastMethodSuccess = 0) THEN
    ? loEmail.LastErrorText
    RELEASE loEmail
    RELEASE loBdImage
    CANCEL
ENDIF

*  Reference the related item in the HTML body by its Content-ID.
loSbHtml = CreateObject('Chilkat.StringBuilder')
loSbHtml.Append('<html><body><img src="cid:PLACEHOLDER_CID"/></body></html>')
lnNumReplaced = loSbHtml.Replace("PLACEHOLDER_CID",lcCid)
loEmail.SetHtmlBody(loSbHtml.GetAsString())

? "NumRelatedItems = " + STR(loEmail.NumRelatedItems)

*  Note: The path "qa_data/images/logo.png" is a relative local filesystem path,
*  relative to the current working directory of the running application.

RELEASE loEmail
RELEASE loBdImage
RELEASE loSbHtml